Milling attachment for planers



Oct. 9, 1923.

J. MICHELSON l MILLING ATTACHMENT FOR PLANERS Filed Jan. 25, 1922 6 Sheets-Sheet 1 INVENTOR ATTORNEY WITNESS:

Get. 9, 1923.

MILLING ATTACHMENT FOR PLANERS Filed dan. 25 1922 6 Sheets-Sheet 2 ATTO R N EY WITNESS:

Oct. 9, 1923.

MILLING ATTACHMENT FOR PLANERS Filed Jan. 25, 1922 6 Sheets-Sheet 5 'l lll zu so so 4o aozolo A'I'TORN EY WITNESS:

1,470,091 J. MICHELsoN Oct. 9, 19.23.

J. MICHELSON MILLING ATTACHMENT FOR PLANERS Filed-Jan 25, 1922 6 Sheets-Sheet 4 WSW ATTO RNEY WITNESS:

Oct. 9, 1923,

J. MICHELSON MILLING ATTACHMENT FOR PLANERS 6 Sheets-Sheet 5 Filed Jan. 25

. NMwHymmu mwV Sm.

Oct. 9, 1923.

J. MICHELsoN MILLING ATTACHMENT FOR PLANERS Filed dan. 25 1922 6 sheets-sheet 6 Mm w hu .kk

ATTO RNEY WITNESS:

Patented Get. 9, .1923.v

JULrUs 'MIoHnLsom or BOSTON, `vivre.ssncHUsnTfrs.V`

Y MILLING ATTACHMENT J son' rfiaivnns.

'appncanonnied January 25, 1922.."seriar1ro. 531,782. 'i

ableof affording seven vdifferent s eeds which may be rotatably attached to a planer, thereby virtually transforming the planer,- which in many shops is idle for a considerable portion of the time because of its limited range of workf-into a large milling machine. Y

A still further vice for attachment to a planer and including a rotating hollow Vspindleadapted forV receiving' an arbor and any type of milling cutter used on a regular milling machine.

A further object is to -provide'a device which will virtually convert a machine of the planer type into aiboring mill, capable of boring holes very difficult of approach, substantially universal movement being possible.Y f-

A further object is to provide'means for performing operations'usually possible only on a radial drill press. v

A further object is to provide, in one form of the device, a motor drivenV spindle capable of use in the machine' shop in a great variety of operations, and to provide in another form, or forms, a belt driven device.

t still further object is toprovide particular change speedmechanism as hereinafter described.V y l Y A still further object is to provide particular lubricating means.

With the foregoing and-other objects in view. the, invention consists in the novel construction and arrangement of elements .described and claimed, it being understood that'modificationsmay be vmade, within the scope of the claims. without departing from the spirit of the invention.`

, In the drawings. Figure :1 is a view of the attachmentin elevation; Figure 2 is a topplan view: Figure 3 isa detail view, insection.v showing a portion'of the lower housing of Figure-1. and one-ofthe spiralv gear 5. are views in elevation showing the manner object yto provide-a `de'-v of mountingthe attachment with a change the changey speed device and-other elements in dotted lines; Figure 7 is an elevation lwith AfTNTj orricr. g

lspeed device; Figure is. an elevation, with Y parts broken away, showing a change speed v mechanism like that used in the formV of Figures 4 to 6, but illustrating a motor drive and gear changing devices;Figure 8 is a view looking vfrom ther-ight in Figure?e g Figure 9 is a detail view, in section 4`and elevation, showing means forimparting 1,

longitudinal movementto spindle 68 of the change speed mechanism of Figure 7; Figure 10 is a detail view showing a lug or key on spindle 68 for engaging any oneof the i gear wheels (appearing in section), which it is desired to employ ata given time. 1

:Referring especially.l to Figure 1, the reference number 10V indicatesp'a bracket or 12. This holder 10 includes aportionl mounting a rotatable-body 14: Vretaindgin thereon, the shaft rotating' within the bronzebushing 2O including a flange 21- for retain- .ing this element fin position. y. A thrust washer is shown at 22,*and a beveled pinion 23 is secured on the end of the shaft 18 and meshes with a bevel gear 'wheelv24keyed on holder adapted to be secured,4 to the toolr reste ofthe planer by means of clamps 11Vv and` the'shaft 25. This 'shaft andfgear wheel are u mounted in casing 26,*the latter being closed by a cover .27, threaded tothe casing as shown at 28. Figure lv shows the casing yas being formed with a body 14,' and as the latter extends into the bracketY 13, and shaft 18 extends through the elements .13 and 14; and mounts a. belt pulley on: the other side of the bracket, distribution of the strain, incident 'to the use of the tool to be carried by the spindle, is effected. Pulley 19 being on the Vside vof'bracket. 13 opposite` the tool.

holding device, the drive on the pulley is; an

ll/loreovenlthe flanged lOdyv lil-.0f Fig'illl 1,

important factor in counteracting stnain.-

and the plate 15` are',clamped.oriV opposite. y sidesA ofrbracket 13, by means of.v screws` or bolts'lf n Also mountedfin the casing-26de a ro` .tatable orv swivelled body 30 providedv with wheels for. driving the tool; Figures ,l1-and graduations .Y cooperating Ywith an index Y portion 32 bearing against the shoulderfBB formed on casing 26. It will be Observed that the body 30 is rotatable about anaxis perpendicular to the ans about which element le is rotatable, thereby giving virtually universal movement to the tool to be carried by the device as a Whole.

Keyed on the shaft 25 is a spiralV Y cover 27. Oil )asses Ythrough o yeuino-s lil to l l s the chamber in thc portion 41 in which the spiral gear Wheels areinounted, and by Vproviding for lubrication from the'inside, the tendency is te wash out' fine dirt or foreign I naterial;y by the slight leakage et a light grade of oil. g 1

In the form shown Vin' Figure 5, the mounting of Vthe s wi'velled Velement is the same as' in Vthe'V form irst described. but a change speed'device is provided, the` eight gear'wheels employed in connection therewith beine housed in the casinfrlB. This b Y H mechanism is also belt driven` a pulley be- Yiiigshovvn on shafted, tliepulley being des ignated 19".' 'A controlling device l5 serves to provide Yfor our'changes in speed With- {outpreliminary change of theposition oi 'the gear Wheel by opening the gearing casing. This Vmechanism willY be described more in detail in connection With the next form. Figure 6 shows in dotted lines )farb ous elements of the form of the device illustrated in Figure 5.

'In Figures7 and 8 l have shown a motor driven device with change speed mechanisms, the motor beingd'esignated 50, the armature shaft being shoivn at 5l. and'tliis shaft carryii'ig sprocket Wheel 52 illustrated in Figure 8 for driving a spr eket Wheel 59 by means of a chain 50. f a

rThe sprocket Wheel 59, drivesia tubular VVshaft 61l on which the gear Wheels 62.

(island (i5 are "inoiintedi the Wheels beingv normally loose onf the tubular shatt1 and .anyone'of the W'lieelsbeing adapted to be V keyed thereto. to provide for rotationcivith theshaft; Meshiiig` y geary Wheels aiedesighated 62', 6.3',A 64 and 6,5. These vgear Wheelslast named are' keyed on 'the shaft 66 corr' bonding with the shaft 18 in the form A A spindleV 68; extends into holloiv shaft 6l and carries a keyl) throughlongitudinal "slot 70 in i shaft 6l and Yadapted to engage the key-Way` 'sha of` any. one `oit the gear VWheelsI on the gear Wheel to the shaft. he spindle '68 is movable longitudinall bmeans of a nin- Vion 73 engaging the-,circular rack 74 formed on the spindle bypipijiding a series of annular lianges.

A. spring 75 encircles portion eoV v of pinion '73 and islocated Within the bore v76, bears against the shoulders 77 and 78. and servesy to permit a. given degree or' movement ofthe element 73 underiesilient action.'y This spring 75 tends tohold pinion 73 in the position oll Figure Sb but in shifting the gears the'operating device referred to below and the'pinion are drawn outwardly byhaiid, and the pinion is rotated for moving spindle 68 longitudinally.v Thespring i'estorestlie 'elements to normal are shifted.

position a iter tliiegears An operating arm 78is secured by va pin 79 for rotating element 73 and a locking pin 8()t enters one of the several openings 81, and

retains arm 78 in a given position, and therefore retains the desired set orpair of gears in mesh. l Y Y This arrangement provides VttorV changes, of speed, and three additional four f changes may beeflected by remoi-'in "there Ycover `on the gear lcase and rearranging the gears,'-thus the speed.

Inj'this form of the device,'the castingfl providing for 'seven changes-:in

represents the holder, the motor supporting A bracket is shown at 82 and the two part casing for the sprocket Wheels at 83. Thegear casi-ng 84 is clamped to bracket. 82 atfthe point 85. The sprocket chain'iniparts movement to shaft 6l by means ot spro'eket Wheels similar to those illustrated in Figure loo 8. Assembly and adjustment of' the parts is facilitated by elongatedy slots 87.' In general, the foregoing descriptionis based upon the important features offtlie deviee', niachine shop details being unnecessary in this connection, andA therefore not included.

vHaving thus described "my'inventioi'i, I

claimt 1. In a mil-ling' attachment for a planer.

efholder for connection with the toolpostof the planer, a gear Vcasing including a Vbody l:

YextendingY into and 'rotatab'lyif connected ivith i the holder, gearing within the casing` Va rotatable on saidshaft eXtending Jthrough the heed and the body, an axis perpendiciv lartoithe axis of the shaft, and a toolholding spindle drivenv fromv the gearing.

2; ii a millingattachment for aplanena- Y'shaft for drivingv the gearing, an element" izo holder for connfectiorrwithl the tool post of tliev planer, a. gear 'casing rotatably connected vvith the holder, gearing Ywithin thev c asing, ashaft foi'djriving the gearing, a driving pulley ontlie shaft? anden that' side of the holder opposite'the gear casing",y an ele- ;inent rotatabley onfan axis perpendicular to `the aXisllof they shaft, and-'a tool/holding spindle mounted on an axis perpendicular to the axis of the shaft andthe aforesaid rotatable element.

8. In a milling attachment for a planer, a holder for connection with the tool post of the planer, a gear casing. including a body extendinginto and rotatably connected with the holder, a gearing within the casing, aV

Vthe holder, gearing within the casing, a

shaft for driving the gearing, a pulley on the shaft and on that side of the,holderop posite the gea-r casing, a shaft driven by the gearing, a tool holding spindle rotatable on 'i an axis perpendicular to the axis of thel shaft first named, and meshing spiral gear wheels for driving the spindle on the second named shaft. Y A

5. In a. device of the class described, a rotatably mounted element, a gear casing con.- nected therewith, a driven shaft projecting through said rotatable element and into the casing, a pinion carried by the shaft, a bev-V elled gear wheel driven by the pinion, a shaft keyed to the gear wheel, an element rotatable with reference to the casing and on an axis perpendicular to the shaft firstnamed, said rotatable element last named including portions engaging one wall of the casing from opposite sides, to form respectively an oil chamber and an anglemeasuring device, a tool holding spindle perpendicular with reference to each of said shafts, and means for driving the spindle from the second named shaft. Y

6. In a device of the class described, a rotatably mounted element including a casing, gearing within the casing, a shaft for driving the gearing, a shaft driven bythe gearing, an element rotatable with reference to the casing and on an axis perpen-v dicular' with reference to the driving shaft, a spindle including a tapered bore and rotatable on an axis perpendicularto the axes of the shafts, means for driving the spindle from the second named shaft, and means for lubricating the spindle from the casing and lubricating` the second'V named shaft throughone of the rotatable elements.

rotatably mounted element, a gear Vcasing connected therewith, a drivenfshaft entend-V ing into the casing through 4the rotatable element, a second shaft driven from theV shaft first named, an element rotatable with reference to the casing and mounting thev second shaft, said element last named including a flanged retaining member cooperating with the wall of the casing and pro-v Y videdwith lubricating channels, al spindle mounted to rotate on an aX-is perpendicular with reference to the axes of said shafts, a A

casing element connected with the Vcasing first named, the spindle projecting into said casing element, an oil" channel being pro'- vided between the element last named and the' main casing, and gearing for driving theY spindle from the second named shaft.

8. In a device of the `rclass described, a

hollow spindle and driving means therefor including a shaft, a plurality of gear-wheels keyed on the shaft, a tubular shaft, gear wheels loosely mounted thereon and mesh-Y ing with the gear wheels first named, and

kmeans for connecting any'of `the loosely d y-with the vtubu-Vv mounted gear wheels rigi n lar shaft, said meansincluding a slidably mounted spindle operating within thelhol-V` low shaft engaging means on the spindle,an y' elongated pinion contacting with the en- Y gagingmean-s, an operating device .for shift- 1 ing the pinion, and a spring normally holding the operating device and pinionv against i movement. Y

9. In a device of the class describeda spindle and driving means therefor including a shaft, gear wheels of different diameters keyed on the shaft, a hollow shaft, gear wheels meshing with those first named and loosely mounted'on the hollowfshaft, driving means for the shaftV last-named, Va

spindle slidable Within the hollow shaft, a

key carried thereby and adapted to lockv A any of the gear wheels on the hollow shaft, for effecting rotation therewith, a rack cariied b-y the spindle, and a spring held elongated pinion for imparting movement to the rack and spindle. Y'

10. kIn ka device of the class described, a holder for connection with the tool post of a machine tool, means for mounting a rotatable spindle for movement about a plu-' rality of axes, said mounting means beingy connected withV the holder, 'change Aspeed l mechanism for imparting movement to the spindle, a controlling device for said mech'- anism a motor mounted onthe holder, and means for imparting movement from the shaft In testimony whereof I affix my signature.

of the motorto the change speed mechani-Sm. 7. In a device ofthe class described, a f 

